Make SHA1 optional, implement SHA256 fingerprints SHA256 is always compiled and only enable SHA1 when needed. Fingerprints are always SHA256: base64 format, md5 and sha1 are removed. dbrandom now uses sha256 its hash function.

#!/bin/sh

EXITCODE=0

# #ifdef instead of #if
grep '#ifdef DROPBEAR' -I *.c *.h && EXITCODE=1

exit $EXITCODE